Author: George Danz HVIC high voltage integrated circuit designed driv

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Author: George Danz HVIC high voltage integrated circuit designed driv

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HVIC/IGBT Half-Bridge Converter Evaluation Circuit
Author: George Danz HVIC high voltage integrated circuit designed drive n-channel IGBTs MOSFETs half-bridge configuration 500VDC. Power supply motor control inverters configured voltages 230VAC using HVIC, IGBTs other components. precautions should taken using circuit. Lead lengths between external power circuit (including gate pilot leads), bypass capacitor (CDD), bootstrap diode (DF) capacitor (CF) HVIC should minimized. basic components required evaluate features SP601 shown simplified schematic. recommended load largely resistive that largest current component will flow through IGBTs, IGT1 IGT2. flyback diodes, rated will carry much smaller flyback current component. small amount load inductance will cause switching waveforms simulate conditions which would normally observed with motor transformer loads, while limiting current carried lower rated flyback diodes this circuit. values RPUa, RPUb, etc., have been chosen result overcurrent trip approximately 25Apk. this level current, heat sinking IGTs flyback diodes required. series resistance upper lower pilot resistor dividers would approximately divider ratio should cause 0.1V desired trip current. When first energizing your evaluation circuit, begin with reduced voltage about 20VDC 30VDC verify proper circuit operation before proceeding higher voltages. More specific information found File Number 2428 File Number 2429 Half-Bridge 500VDC Driver data sheets Application Note, AN-8829.1.
Title lfdge nter aluon utho eyrds
Simplified Schematic
25VDC VLINK 500VDC IGT1 PULSE +15V UP/DOWN VBIAS PHASE VOUT TRIPU RPUb VLINK 0.22 RPBa
geode setes OCEW
FAULT FAULT +15V
IGT2 RPLa
HVIC
ENABLE
TRIPL
VLINK RPLb
10µF
HVIC Intersil Part SP601 (Formerly GS601) IGT1, Intersil Part HGTA24N60D1C
Intersil Part RUR860 Intersil Part A114M
RPUa, RPLa 910, 1.8W RPUb, RPLb 1.8W
0.1µF, 600VDC
©2001 Fairchild Semiconductor Corporation
AN-7508 Rev.
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Author: George Danz HVIC high voltage integrated circuit designed driv

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